Is a cuttlefish and octopus?

Both squid and cuttlefish are part of class Cephalopoda, which is a type of mollusk that also includes octopus and nautilus. Both squid and cuttlefish are known as ten-armed cephalopods because they have eight short arms and two long tentacles (as opposed to eight-armed cephalopods like octopuses).

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You can also ask do humans have 3 brains?

You have three brains ? your HEAD brain, your HEART brain, and your GUT brain. Moreover, how many brains does a dolphin have? Do Dolphins Have Two Brains? Dolphin's do not have two brains, but because they can sleep half of their brain it almost feels that way doesn't it? When humans and other mammals sleep, both hemispheres of the brain sleep.

Correspondingly, what animals cannot feel pain?

Though it has been argued that most invertebrates do not feel pain, there is some evidence that invertebrates, especially the decapod crustaceans (e.g. crabs and lobsters) and cephalopods (e.g. octopuses), exhibit behavioural and physiological reactions indicating they may have the capacity for this experience. Which animal milk is black? "And that makes sense, because if a female were lactating for a few years and really investing in putting a lot of nutrients into her milk, that's not really sustainable over a long period of time," Skibiel says. "That's probably the reason why we see such low fat in the black rhinoceros milk."

What animal is stupidest?

1- Sloths. Sloths are the slowest and dumbest animals out there. They spend most of their time sleeping on the tree branches, but they never poop on the trees. Moreover, do cows have 2 hearts? Cows don't have four hearts. Cows have a single heart, just like every other mammal, including humans!